AdventuresPlanar Mysteries

Reasons a site might be abandoned P6

(Author’s note, I’ll be picking up where I left off numerically)

One of the classic D&D tropes is a party entering a dungeon. Such places are either abandoned, in the middle of nowhere, or, sometimes, under a bustling city, but forgotten. Sometimes, these sites don’t need many repairs to make them usable. If this is is the case, often other things have taken up residence. But that begs the question, why were they abandoned in the first place? This article will answer that question. Read on:

Also see Part 1Part 2, Part 3, Part 4

31 Mausoleums and catacombs

Dead are kept in Mausoleums and catacombs. Modern mausoleums are a fancy building where they are stacked one on another.  Catacombs do things differently. Catacombs in the real world were a result of the cemeteries overflowing. To contain the older remains, bodies were moved to the underground quarries, which once built the city. The underground quarries wound their way throughout the city. If one had access to these subterranean passages, they might link to tunnels even further beneath the city. According to the “Walks of Italy” website

[Hired] quarrymen [slowly and painstakingly] lined the walls with tibias and femurs punctuated with skulls, which form the basis of most of the decorations that tourists see today. Both out of whimsy and to convey deeper religious messages about death, they also arranged bones in various shapes, like hearts, circles, and death heads. They erected signs which serve as commemorative plaques and carved arrows into the ceilings, so the first people visiting on catacomb tours (who were seeing everything by the eerie flicker of candlelight) would not lose their way… To entice more visitors, various “exhibitions” were installed in the Catacombs. These included a room showcasing skeletons with various deformities as well as a room displaying the types of minerals that were found when the tunnels were being excavated – neither of which you can see anymore.

D8 dangers of Mausoleums & catacombs

  1. Bad odors. As bodies rot, they emit gasses that most find unpalatable.
  2. Exploding Coffins. If coffins are air-tight, the previously mentioned gasses can build up, causing an explosion.
  3. Failure to upkeep. Mausoleums and catacombs need occasional maintenance. Over time, if abandoned, the structures and underground passages might be in disrepair. Such damages, over time, might make them dangerous to traverse due to mildew, mold, and collapsing passages.
  4. Dangerous materials. Depending on the materials such places are made of, they could expose visitors to uranium, asbestos, and/ or lead. Such materials make said structures none-too-safe to occupy for long periods.
  5. The homeless are more of a danger in the modern-day, but even in a fantasy setting, such things could exist. Itinerant workers, wanderers, and those merely seeking shelter from the weather might be occupying such structures. Because they’re not typically supposed to be there, they might be none-too-friendly at being caught.
  6. Unquiet undead. Because there are many bodies in such places, it’s not unusual for them to be occupied by undead created accidentally or purposely. Groundskeepers of such sites should hire adventurers to clear them out regularly.

32 Disappearing land

There are a variety of reasons why the land might be disappearing. Swamp or forests are reclaiming the land. Oceans rise due to climate change and glacial melting. A desert could be invading an area due to erosion and windstorms.

If not for the constant upkeep by man’s actions, water flows to the point of least resistance. When we’re not around, birds eat and distribute seeds in their waste. Within a few years of humans not being there, forests tend to reclaim entire areas. If not cared for and cultivated, even oases may not last forever. Eventually, the desert will reclaim them, as the area’s aquifers, topology, and geology/ geography change over time.

33 Pollution

While I won’t repeat my pollution articles content here, pollution is why people may not want to live in an area anymore. It’s unhealthy, and over-time may be deadly. In addition to that, it’s often unsightly, odoriferous, and harmful to animals. For ideas on how to incorporate pollution into your game, see my articles here and here.

34 Mutation

A side effect of pollution is mutation. There are a lot of good tables here, here, and here. Even if such mutations are beneficial, the general populace would both fear and discriminate against them. See how the X-men and Morlocks in comics, cartoons, and movies. Over time, if mutants became more prevalent than the general population, those without mutations would likely move out.

35 Ran out of money

Sometimes projects just run over budget. The vision was too grand. Maybe the materials were more expensive, or it took longer to get them than anticipated. Labor rates skyrocketed. Or the quality was poor and had to be redone repeatedly. Whatever the cause, the location was left incomplete due to a lack of funds. Once there were no more funds keeping people there, it was left to rot. Conversely, it was funded to an extent, but the complete vision was never fulfilled due to having funding cut off.


There are a variety of reasons why a site might be abandoned. The list presented here was just a few.

When preparing an abandoned site, ask yourself the following questions:

  • What was this site used for?
  • Why was it abandoned? What is its story?
  • Who was there before?
  • Has something else moved in? If so, what?
  • What did they leave behind?

Using abandoned sites as a springboard to drive the plot, you can make better use of your game’s locations. Look out for part 6 of this series soon.